I've just measured all around the crank at regular intervals, I have about 30 measurements, the smallest is 1.173 inch and the largest 1.178 inch, the average being 1.175. The extremities may just be my awkward handling of the micrometer but I did my best to get accurate measurements. Do these measurements give an indication of the state of the crank, is it ok to proceed? If so is it a standard size?
Thanks
James

Thanks, that sounds like a good option. Is it likely that the crank could have been distorted by the impact of the rod when it failed, would you advise replacing the crank anyway under these conditions or is it unlikely to have been damaged further that what is visible?

Commando 800
Model: K181S
Serial No: 9514046
Spec. No: 30700d
Hi
I have just joined as I have a rebuild to do on my Wheelhorse, the con rod and piston broke and require replacement, I couldn't find original parts so have a kit from ebay seller in the States
I think I have everything I need apart from knowledge! To begin with the crank is not super smooth, I am wondering if that will be a problem? I have taken a short video which shows the state of it.
The video is here
Any advice will be much appreciated!
Thanks
James